Suzuki Wagon R Plus RB310, Service Manual

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ENGINE AND EMISSION CONTROL SYSTEM (M13 ENGINE) 6E2-37
Main relay, fuel pump relay and radiator fan relay
inspection
1) Disconnect negative cable at battery.
2) Remove main relay (1), fuel pump relay (2) and radiator fan
relay (3) from relay box.
3) Check that there is no continuity between terminal “C” and
“D”. If there is continuity, replace relay.
4) Connect battery positive (+) terminal to terminal “B” of relay.
Connect battery negative (–) terminal “A” of relay.
Check continuity between terminal “C” and “D”.
If there is no continuity when relay is connected to the bat-
tery, replace relay.
Fuel cut operation inspection
1) Warm up engine to normal operating temperature.
2) While listening to sound of injector (1) by using sound scope
(2) or such, increase engine speed to higher than 3,000 r/
min.
3) Check to make sure that sound to indicate operation of injec-
tor stops when throttle valve is closed instantly and it is
heard again when engine speed is reduced to less than
about 2,000 r/min.
“D”
“B”
“A”
“C”
1
2
3
NOTE:
Before inspection, check to make sure that gear shift
lever is in neutral position (with A/T model, selector lever
in “P” range), A/C is OFF and that parking brake lever is
pulled all the way up.